package com.jiyinit.web.core.common.util;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.text.DecimalFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.LinkedList;
import java.util.List;

import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFDateUtil;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.xssf.usermodel.XSSFCell;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;


/**
 * poi解析excel
 * @author laiwei
 * @version 1.0
 * @date 2017/5/27 16:30
 * @since 1.0
 */
public class ReadExcelUtil {

    /**
     * 对外提供读取excel 的方法
     */
    public static List<List<Object>> readExcel(File file) throws IOException {
        String fileName = file.getName();
        String extension = fileName.lastIndexOf(".") == -1 ? "" : fileName
                .substring(fileName.lastIndexOf(".") + 1);
        if ("xls".equals(extension)) {
            return read2003Excel(file);
        } else if ("xlsx".equals(extension)) {
            return read2007Excel(file);
        } else {
            throw new IOException("不支持的文件类型");
        }
    }

    /**
     * 读取 office 2003 excel
     *
     * @throws java.io.IOException
     * @throws java.io.FileNotFoundException
     */
    private static List<List<Object>> read2003Excel(File file)
            throws IOException {
        List<List<Object>> list = new ArrayList<List<Object>>();
        HSSFWorkbook hwb = new HSSFWorkbook(new FileInputStream(file));
        HSSFSheet sheet = hwb.getSheetAt(0);
        Object value = null;
        HSSFRow row = null;
        HSSFCell cell = null;
        int counter = 0;
        int cellSize=0;
        for (int i = sheet.getFirstRowNum(); counter < sheet
                .getPhysicalNumberOfRows(); i++) {
            row = sheet.getRow(i);
            if (row == null) {
                continue;
            } else {
                if(counter==0){
                    cellSize=row.getLastCellNum();
                }
                counter++;
            }
            List<Object> linked = new ArrayList<Object>();
            for (int j = row.getFirstCellNum(); j <cellSize; j++) {
                cell = row.getCell(j);
                if ("null".equals(String.valueOf(cell))||"".equals(String.valueOf(cell))||"0".equals(String.valueOf(cell))) {
                    linked.add("");
                    //list.add(linked);
                    continue;
                }
                DecimalFormat df = new DecimalFormat("0");// 格式化 number String
                // 字符
                SimpleDateFormat sdf = new SimpleDateFormat(
                        "yyyy-MM-dd HH:mm:ss");// 格式化日期字符串
                DecimalFormat nf = new DecimalFormat("0.00");// 格式化数字
                switch (cell.getCellType()) {
                    case XSSFCell.CELL_TYPE_STRING:
                        value = cell.getStringCellValue();
                        break;
                    case XSSFCell.CELL_TYPE_NUMERIC:
                        if ("@".equals(cell.getCellStyle().getDataFormatString())) {
                            value = df.format(cell.getNumericCellValue());
                        } else if ("General".equals(cell.getCellStyle()
                                .getDataFormatString())) {
                            value = nf.format(cell.getNumericCellValue());
                        } else {
                            value = nf.format(cell.getNumericCellValue());
                           /* value = sdf.format(HSSFDateUtil.getJavaDate(cell
                                    .getNumericCellValue()));*/
                        }
                        break;
                    case XSSFCell.CELL_TYPE_BOOLEAN:
                        value = cell.getBooleanCellValue();
                        break;
                    case XSSFCell.CELL_TYPE_BLANK:
                        value = "";
                        break;
                    default:
                        value = cell.toString();
                }
                if (value == null || "".equals(value)) {
                    value =null;
                }
                linked.add(value);
            }
            list.add(linked);
        }
        return list;
    }

    /**
     * 读取Office 2007 excel
     */
    private static List<List<Object>> read2007Excel(File file)
            throws IOException {
        List<List<Object>> list = new ArrayList<List<Object>>();
        // 构造 XSSFWorkbook 对象，strPath 传入文件路径
        XSSFWorkbook xwb = new XSSFWorkbook(new FileInputStream(file));
        // 读取第一章表格内容
        XSSFSheet sheet = xwb.getSheetAt(0);
        Object value = null;
        XSSFRow row = null;
        XSSFCell cell = null;
        int counter = 0;
        for (int i = sheet.getFirstRowNum(); counter < sheet
                .getPhysicalNumberOfRows(); i++) {
            row = sheet.getRow(i);
            if (row == null) {
                continue;
            } else {
                counter++;
            }
            List<Object> linked = new ArrayList<Object>();
            for (int j = row.getFirstCellNum(); j <= row.getLastCellNum(); j++) {
                cell = row.getCell(j);
                System.out.println(cell+"uuuuuuuuuuuuuuuuuuuuuuuuu");
                if ("null".equals(String.valueOf(cell))||"".equals(String.valueOf(cell))||"0".equals(String.valueOf(cell))) {
                    linked.add("");
                    continue;
                }
                DecimalFormat df = new DecimalFormat("0");// 格式化 number String
                // 字符
                SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");// 格式化日期字符串
                DecimalFormat nf = new DecimalFormat("0.00");// 格式化数字
                switch (cell.getCellType()) {
                    case XSSFCell.CELL_TYPE_STRING:
                        value = cell.getStringCellValue();
                        break;
                    case XSSFCell.CELL_TYPE_NUMERIC:
                        if ("@".equals(cell.getCellStyle().getDataFormatString())) {
                            value = df.format(cell.getNumericCellValue());
                        } else if ("General".equals(cell.getCellStyle().getDataFormatString())) {
                            value = nf.format(cell.getNumericCellValue());
                        } else {
                            value = nf.format(cell.getNumericCellValue());
                        }
                        break;
                    case XSSFCell.CELL_TYPE_BOOLEAN:
                        value = cell.getBooleanCellValue();
                        break;
                    case XSSFCell.CELL_TYPE_BLANK:
                        value = "";
                        break;
                    default:
                        value = cell.toString();
                }
                if (value == null || "".equals(value)) {
                    continue;
                }
                linked.add(value);
            }
            list.add(linked);
        }
        return list;
    }

    public static void main(String[] args) {
        try {
            List<List<Object>> list = readExcel(new File("D:\\test\\test1.xls"));
            for(List<Object> h : list){
                System.out.println("--");
                for(Object obj : h){
                    System.out.print(obj.toString() + ",");
                }
            }
            // readExcel(new File("D:\\test.xls"));
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}
